2013年安庆市中考模拟考试(一模)
2013年安庆市中考模拟考试(一模)
2013年安庆市中考模拟考试(一模)英语试题第一部分听力(满分30分〕I.关链词语选择(共5小硒;每小题1分,满分5分)你将听到五个句子。
请在每小题所给的A,B. C三个选项中选出一个你所听到的单词或短语.每个句子读两遍.1. A. seen B. thin C. scene2. A. tasty B. salty C. crispy3. A. produce B. practice C. pronounce4. A. permission B. suggestion C. organization5. A. hang out B. hol d out C. hand out1I,短对话理解(共10小颐:每小题1分,满分10分)你将听到十段对话,每段对话后有一个小题.请在每小题所给的A. B. C三个选项中选出一个最佳选项.每段对话读两选.11.What time is it now?A. 8:18.B. 8:42.C. 9:22.12. How often does the boy go to his hometown with his parents?A. Very often.B. Hardly ever.C. Once a year.13. What is the girl's mother?A. A restaurant conk.B. A bank clerk.C. A school teacher.14. What's the girl's opinion about the "class clown"?A. Lovely but homeless.B. Lazy and careless.C. Lonely and helpless.15. Why does the boy stay there?A. Because he's waiting for someone.B. Because he's losing his way home.C. Because he's playing sports there.111.长对话理解(共5小题:每小题1分,满分5分)你将听到两段对话,每段对话后有几个小题.请在每小题所给的A.日、C三个选项中选出一个最佳选项.每段对话读两遍.户听下面一段对话,回答第16至17小题.16. How soon will Alice be back home?A. At once.B. In half an hour.C. Tomorrow evening.17. What will Mary do?A. Phone Alice later.B. Listen to tapes.C. Practice dancing.听下面一段时话,回答第18至20小题.18. What club does the boy want to join?A. Music club.B. Sports club.C. Art club19. What is the boy good at?A. Dancing.B. Singing.C. Drawing.20. Who says the boy has the drawing talent?A. His parents.B. His pen pal.C. His art teacher.IV.短文理解(共5小题:每小颐t分,满分5分)你将听到一篇短文,短文后有五个小题.请根据短文内容,在每小题所给的A. B. C 三个选项中选出一个最佳选项。
2013年安徽安庆初三数学一模试题
2013年安徽安庆初三数学一模试题一、选择题(30分)1、如果水库的水位高于正常水位2m 时,记作+2m ,那么低于正常水位3m 时,应记作( )(A)+3m (B)-3m (C) +13 (D) -132、下列等式成立的是( )(A) x 2·x 3 = x 6 (B) x 3 + x 3 = x 6 (C) (x 2)3 = x 6 (D) (2x 3)2 = 2x 6 3、三峡电站的总装机容量是一千八百二十万千瓦,用科学记数法把它表示为( )(A)0.182×108千瓦 (B)1.82×107千瓦 (C) 0.182×10-8千瓦 (D)1.80×10-7千瓦 4( )(B)5、实数a 在数轴上对应的点的位置如图所示,化简|a + 3|的结果是( ) (A)a + 3 (B) a -3 (C)-a + 3 (D)-a -36、函数y =的自变量的取值范围是( ) (A)x ≤3 (B)x ≥3 (C)x ≤-3且x ≠-1 (D) x ≥-3且x ≠-1 7、下列三个命题:①同们角相等,两直线平行;②两点之间,线段最短;③过两点有且只有一条直线,其中真命题有( )(A)0个 (B)1个 (C) 2个 (D) 3个8、下列用英文字母设计的五个图案中既是轴对称图形,又是中心对称图形的有( )个 (B) 1个 (C) 2个 (A) 0(D)3个 9、若两圆外切,则这两圆的公切线有( ) (A )1条 (B )2条 (C )3条 (D )4条 10、函数y = kx + 1与函数xy k =在同一坐标系中的大致图象是( )(A ) (B ) (C ) (D ) 二、填空题:(请将答案填写在第Ⅱ卷指定的位置。
本大题共4小题,每小题4分,计16分) 11、-2的相反数是___________; 12、三角形按边的相等关系分类如下:______________________⎧⎪⎧⎨⎨⎪⎩⎩不等边三角形三角形底边和腰不相等的三角形等腰三角形13、若⊙O 的半径为4㎝,其中一条弧长为2π㎝,则这条弧所对的圆心角的度数是________; 14、观察下列不等式,猜想规律并填空:12+ 22> 2×1×2; (2)2+(21)2> 2×2×21(- 2)2+ 32> 2×(-2)×3;22+2> 2×2(- 4)2+ (-3)2> 2×(-4)×(-3); (-2)22> 2×2a +b > _____________(a ≠b)三、解答题:(本大题共5小题,每小题5分,计25分)15、已知1a =,求代数式232121a a a a a ++-++的值;16、已知:如图,AF=CE ,AB ∥CD ,且AB=CD 。
安庆市2013年中考物理模拟试题及答案
第1题图 第2题图 2012年安庆市初三模拟试卷(安庆市中考命题研究课题组 本站参与命题)考生注意:1.本卷共四大题24小题,满分90分.物理与化学的考试时间共120分钟.2.本卷试题中g 值均取10N /kg .一.填空题(第1—7小题每空1分,其余各小题每空2分,共23分,不必写出解题过程)1.2007年春节晚会上,一曲配乐舞蹈“雨巷”给人以美的享受,博得了观众的一致好评。
(1)如图所示,我们可以看到舞蹈者脸部在灯光下的阴影,这是因为光是 传播的。
(2)在观看演出的过程中,我们虽然没有看到乐队却能分辨出是何种乐器发声,这主要是因为不同乐器所发声音的 是不同的。
2.如图为2008年南方雪灾中的一个场景。
汽车在紧急刹车时,总是滑行一段距离才能停下来,这是由于汽车具有_________;当路面有冰雪时,轮胎与地面间的摩擦会变_______,汽车在紧急刹车后滑行的距离将比路面没有冰雪时 。
3.在奥运会跳水这一运动项目中,运动员郭晶晶对跳板施力的同时,也受到跳板对她的作用力,但这两个力的作用效果却不同,前者主要改变了跳板的 ,后者主要改变了运动员的 。
4.在图中,甲是一个金属扳手,乙是一双竹筷。
请你:(1)从力学知识角度分析,写出它们的一种不同之处:______________________________。
(2)从电学知识角度分析,写出它们的一种不同之处:______________________________。
5.如图所示,2008年2月3日上午,安徽省枞阳县出现了南方地区罕见的自然美景--雾淞。
它属于 现象;右图是2008年南方雪灾中见到电线上的冰柱现象,它属于 现象。
(填物态变化名称)6.如图所示为物质三种状态下分子模型,图 是气体分子模型,初中物理课本中还有哪些物理模型,请再举一例: 。
7.如图所示,如果直接将该物体投入水中,该物体将 (选填“上浮”、“ 悬浮”或“下沉”);从图乙、丙可以看出浮力的大小与液体的 有关。
英语_2013年安徽省安庆市中考英语模拟试卷(含答案)
2013年安徽省安庆市中考英语模拟试卷I、关键词语选择(共5小题;每小题1分,满分5分)你将听到五个句子.请在每小题所给的A、B、C三个选项中选出你所听到的单词或短语.每个句子读两遍.1.A streetB straight.C strict.2. A.feelB.fellC.fall.3. A.soundB.foundC.thunder.4. A.noseB.newsC.noise.5.A would likeB would ratherC rather than.听短对话,选图片或答案.(共10小题;每小题1分,满分10分)你将听到十段对话和十个问题,每段对话读两遍,每个问题读两遍.请在每小题所给的A、B、C三个选项中选出最佳选项.6. What should the woman do?7. Who will mend (修理) the vase (花瓶)?8. Where can Gina get a part-time job?A 是post office图,B是服务员在餐厅,C是超市图.9. How does the man go to work now?10. How many children are there in the party?11. What is the girls problem?A She has too much homework.B She can't understand the teacher in class.C She doesn't want to do any homework.12. Why don't they go to Dan's clothing store?A Because they don't have enough money.B Because the clothes there are out of style .C Because the clothes in Dick's are cheaper.13. What happened between the boy and his sister?A They did something wrong.B They went to buy clothes together.C They didn't talk with each other..14. What kind of the friend would the man like?A A person who likes the same thing as he does.B A person who looks the same as him .C A person who is not the same as him.15. What does the woman think of PC games?A They are boring.B They are interesting but bad for studies.C They are fun and good for studies.III、长对话理解(共2小题;每小题2分,满分5分)你将听到段长对话,每段长对话后有几个小题.请在每小题所给的A、B、C三个选项中选出最佳选项.每段对话读两遍.16. 听下面一段对话,回答第16至17题.16.What's wrong with Tim?A His watch is broken.B His bike is broken.C His radio is broken.17.Who can Tim get some money from?A.His friends.B.His sisters.C.His parents.17. 听下面一段对话,回答第18至20题.18.How old is Peter?A Twelve.B Thirteen.C Fifteen.19.How old is Jane?A.Fourteen.B.Thirteen.C.Twelve.20.How old is Mike?A.Twelve.B.Fifteen.C.Sixteen.IV、听短文,选答案.(共1小题;每小题5分,满分5分)你将听到一篇短文,短文后有五个问题.请根据短文内容,在每小题所给的A、B、C三个选项中选出一个最佳选项.短文读两遍.18. (1) Children usually get their pocket money from________.A.fatherB.motherC.mother and father(2) Tom gets his pocket money________.A.from his parentsB.by talking newspaper to forty familiesC.by selling newspaper to forty families(3) What are Tom's parents?A.TeachersB.WorkersC.Doctors(4) When does Tom go to school?A.After 7:30.B.After 7:00.C.Before 7:30.(5) Which of the following is NOT true?A.Tom studies hard and often help othersB.Tom's classmates don't like him.C.Both Tom's classmates and his teacher like him.V、信息转换.(共1小题;每小题5分,满分5分)你将听到一段对话.请根据对话内容写出下面表格所缺的单词,每空仅填一词.短文读两遍.VI、单项选择(共20小题,每小题1分,共20分)20. -Where is _________ basketball?-It's under the bed.()A aB anC theD /21. -I like comedies.What about _________?-I like action movies.()A youB meC yoursD mine22. -Would you like some _________?-No,thanks.I'm full.()A appleB bananaC meatD tomato23. Black shorts are _________ sale in this shop.They are only 11dollars.()A inB toC atD on24. Many people like junk food _________ it's not very good for health.()A soB andC ifD though25. Mr White used to drive on the right in the USA,but now he ________ on the left in Hong Kong.()A used to driveB is used to driveC is used to drivingD is used for driving26. -Could you clean the living room,Kate?It's too _________.-Sure.()A lazyB longC dirtyD curly27. My cousin is _________ a teacher and a good singer.She won first prize in the national sin ging competition last month.()A bothB allC eachD every28. -I don't like playing computer games.-_________.It wastes too much time.()A Me,tooB Me neitherC So do ID So I do29. The English teacher told us a joke,and it made all of us _________.()A laughB laughedC laughingD to laugh30. Which sign should you look for if you want to go out of a building?()A B C D31. -Excuse me.Do you know _________?-Sorry,I don't know.()A does he exercise every dayB who took away my dictionaryC what do you want to beD what did he buy for his mother32. Please _________ to turn off the light when you leave.()A don't forgetB not forgetC not to forgetD to forget not33. -How much does the watch _________?-200yuan.()A payB takeC spendD cost34. -Is Susan watching TV or reading a book?-_________()A She is shy.B She is reading.C Yes,she is.D No,she isn't.35. We should read more good books because they can _________ our eyes.()A look upB put upC open upD wake up36. —Jim goes to help in the food bank every Sunday.—______ kind boy he is!A HowB How aC WhatD What a37. -Is that Peter's hat?-It _________ be his.I'm not sure.()A mustB mustn'tC mayD can't38. I met one of my old friends while I _________ on the beach yesterday.()A am walkingB was walkingC will walkD have walked39. -How long have you _________ Jinan?-For about twelve years.()A been inB gone toC been toD come toVII.完形填空(共2小题,每小题1.5分满分30分)40. An old man lived in a nice house with a large garden.He was busy taking care of his (1)________ in the garden all the time.One day a young man passed by the garden.He looked at the beautiful flowers, imagining how happy he could be (2)________ he lived in such a beautiful place.Then he found the old gardener was blind.He wa s very(3)________.Then he asked the old man, "You can't see these flowers.Why are you busy taking care of them every day? "The old man smiled and said, "I have four reasons.First, I was a gardener when I was you ng, and I really like this (4)________.Second, although I can't see these flowers, I can touch them.Third, I can (5)________ the sweetness of them.As for the last one, that's you.""Me? But you don't know (6)________."said the young man."Yeah, it's true that I don't know you.But I know that flowers can bring (7)________ happiness."The blind old man's work made other people happy, and it (8)________ made himself happy.It was just like Beethoven, one of the greatest musicians in hist ory.Beethoven wrote a lot of great music, but there was something wrong(9)________ his ears in his later life.Beethoven himself couldn't (10)________ his wonderful music, but his music has encouraged millions of people to face their dif ficulties bravely.(1)A treesB animalsC vegetablesD flowers(2)A ifB soC butD before(3)A relaxedB excitedC angryD surprised(4)A boyB jobC bookD movie(5)A workB helpC smellD smoke(6)A youB meC himD her(7)A everybodyB somebodyC anybodyD nobody(8)A stillB alsoC onlyD never(9)A toB forC onD with(10)A readB seeC hearD find41. Some people have a very poor sense of direction.(1)________, I am one of them.I (2)________ a place many times but I may still get lost there the next time.When I was a little girl, I was very shy and (3)________ asked others the way.And so I used to walk round in circle and hope that by chance I would get to the place I was going to.Now, I am no longer (4)________shy to ask people for directions, but I often receive helpless or even wrong informatio n.So I try to avoid giving people wrong directions.If anyone asks (5)________ the way somewhere, I would say, "Sorry, I am a stranger here."Once on my way to work I (6)________ by a man.He asked me(7)________ I could tell him the way to the Friendship Building.I gave him my usual reply.But j ust as I walked on only a few steps, I realized that he had asked the way to my office building .However, I had no time to turn back and (8)________ him.I was rushing to meet with someone at my office and I didn't want to keep him (9)________.When I just got to my office, the secretary showed in the man who had asked me for directi ons.Imagine how (10)________ I was and how surprised he was when we saw each other at the first sight!(1)A LuckB LuckyC UnluckyD Unluckily(2)A have visitedB visitC visitedD will visited(3)A alwaysB usuallyC oftenD never(4)A muchB tooC veryD such(5)A IB meC myD mine(6)A stoppedB leftC was stoppedD was left(7)A whereB howC ifD that(8)A look atB look afterC look forD look like(9)A waitB waitingC waitedD to wait(10)A embarrassedB worriedC boredD tiredVIII.补全对话(共1小题;每小题5分,满分5分)根据对话内容,从方框内的选项中选出能填入空白处的最佳选项.选项中有两项为多余选项.42. A:Do you know that a car factory will be built in our city?B:Yes,I do.(71)________A:Great!(72)________B:But I think it is will mean more pullution and heavy traffic.A:Really?Then you don't want to have more cars,do you?B:No.I don't.(73)________A:Well…you think a bike is better than a car?(74)________B:(75)________I hardly travel to other places because I have no time,and no money,either.A:Oh,I see.But I think things are getting better and better.B:I hope so.A:Could you tell me why?B:We'll have more cars then.C.As for me,I'd rather use my old bike than buy a car.D.You are right.E.I don't think it is necessary for me to buy a car.F.It will turn out 500,000 cars a year.G.Never mind.IX、阅读理解(共4小题,每小题10分满分40分)43. It was a cold day in December in New York City.A poor boy about 10years old was sta nding in front of a shoe store.He was looking through the windows.A lady walked to the b oy and said, "My little boy, what are you looking at? ""Shoes.I am asking God to give me a pair of shoes, "the boy said.The lady took him by the hand and went into the store.She asked the clerk to get a pair of socks for the boy.She then asked if he could give her a basin(盆) of hot water and a towel.The clerk quickly brought the things to her.She washed t he boy's little feet, dried them with the towel, and put on the socks for him.Then she bough t him a pair of shoes."My little boy, do you feel more comfortable now? "she asked.The boy looked up in her face with tears in his eyes.He answered the question with these words, "Are you God's wife? ""No, I'm a mother."said the woman.(1)How was the weather that day?________A It was hot.B It was cold.C It was warm.D It was rainy.(2)The poor boy was about________ years old.A five.B seven.C nine.D ten.(3)The boy was looking through the windows because he wanted________.A a pair of shoes.B a pair of pants.C a new jacket.D something to eat.(4)Why did the lady want hot water?________A Because she was thirsty.B Because it was cheap.C Because the boy's hands w ere dirty.D Because she wanted to wash the boy's feet.(5)The little boy thought the lady was________.A his mother.B his sister .C God's wife.D the clerk's wife.44.Qi Haoran, a Junior 1student at High School Attached to Harbin Institute of Technology, was q uite busy over the past winter vacation-and not just with homework.Qi, together with 10other classmates made a volunteer group to call on people to join the Clean Your Plate Campaign(光盘行动).The 11students went to many restaurants and told people the importance of saving food."Excuse me.Do you know that 950million people around the world still haven't got enough to eat? Could you please not waste food? "They would say this kind of thing hundreds of time s every day.China in recent years has experienced serious problems with wasted food.CCTV reported in January that the food Chinese people waste every year is enough to feed 200million peopl e for a year.It's a tradition that Chinese people offer lots of food when they invite others to dinner.Ma ny even feel that they will lose face if their guests have eaten all their food.Luckily the campaign has got the support of many.In a restaurant in Xinjiang, the owner gives the guests who have eaten all that they ordered a sticker(贴花).People can enjoy a free meal when they have 10stickers.More than 750 restaurants inBeijing have begun to offer smaller dishes and encourage their guests to take leftovers(剩饭剩菜) home.Wasting food is a serious problem around the world, not only in China.It's said that 2billi on tons(吨) of food ends up as waste every year.This is as much as half of all the food in the wor ld.The UN Environment Program and the Food and Agriculture Organization held a"Think, Eat, Save"program on January 24to help reduce(减少) food waste.To reduce food waste is a big task, and it needs time.It's important that everyone does th eir bit, just like Qi.Did you finish your meals today?(1)What did Qi Haoran and some of his classmates do in the past winter vacation?________A They only did their homework.B They joined a chess club.C They volunteered for a campaign.D They opened a restaurant together.(2)The Clean Your Plate Campaign calls on people to________.A do volunteer work.B work part time in restaurants.C stop wasting food.D wash their plates after dinner.(3)From Paragraph 4and Paragraph 5,we learn that________.A wasting food is a serious problem in China.B Chinese people waste the most food in January.C 200million Chinese people invite others to dinner every day.D Chinese people usually don't offer enough food to their guests.(4)What did the restaurant in Xinjiang do to support the campaign?________A The owner would have dinner with those who had eaten up their food.B It offered a free meal to the guests who had finished all their food ten times.C It gave stickers to the guests who ordered small dishes. D It encouraged customers to take leftovers home.(5)According to the passage,which of the following is NOT true?________A Many people in China are starting to do something to reduce food waste.B Two billi on tons of food is wasted in the world every year.C It's not easy for people to solve the problem of wasting food.D The"Think,Eat,Save"program was held to make sure people eat healthy food.45.(1)In News 1,we know Huang Heshan has helped Yang Kangshao for________.A eighteen years.B eighty years.C eight months .D eight years.(2)We should________ if we want to have a nice field trip along Xiaoqing River.A throw the rubbish.B find some waste bags.C plant more trees.D help keep the environment clean.(3)To lead a healthy life,over four thousand people________ on March 25.A cleaned the park.B signed their names on the flags.C ran about 4.D started to help disabled people.(4)We may know the news above from________.A a newspaper.B a novel.C a TV play.D a poster.(5)Which of the following statements is TRUE?________A Yang Kangshao has trouble with his eyes.B Yang Kangshao is better at study than Hu ang Heshan.C Xiaoqing River is very clean and beautiful.D Only young people to ok part in the running activity.46.On March 15, many people in the UK wore a plastic red nose.It wasn't just for fun.They were also raising money to fight poverty(贫穷) in the UK and Africa.This day is called Red Nose Day.It is a huge charity event in the UK every other year.On this day, people do something funny to raise money.A charity is an organization, which tries to support others, help animals or protect the envi ronment.Besides Red Nose Day, there are many other creative ways to help people in need around the world.Many charity organizations run charity shops in western countries.The shops sell second -hand goods donated by the public, such as books and clothes.The money raised goes to hel p sick children and homeless people.Many young people love these shops.The first modern charity shop was opened by UK Oxfam in 1948and is still in operation.Now, the UK has more than 10, 200charity shops.Another way involves(涉及) many famous people.They hold concerts to raise money and awareness(意识) about charity.For example, the Irish singer Bob Geldof and Scottish musician Midge Ure organized the Li ve 8concerts in 2005.The theme was poverty in Africa.There were 10concerts held in diff erent cities at the same time.Over 1, 000musicians performed to ask people to give their na mes, which they made into a"Live 8list".The list was then presented to world leaders."This is really a United Nations.The whole world has come together in solidarity(团结) with the poor, "former UN Secretary General(秘书长) Kofi Annan told the BBC.In China, there are many charity organizations, too, such as the Red Cross Society of China, which was set up in 1904, and the Love Without Boundaries(国界) Foundation.Every person can make a difference in helping others in need.Here are s ome tips for you.●Donating money is a very common way of giving.You must have seen some donation b oxes kept in stores and in malls.There is a picture or a message on the box telling where the money will go.Dropping change into the box is a simple way of helping others.●Next time, when you clean your house, try to keep old things that may not be useful to yo u, such as books, bags, shoes and clothes.Then, you can donate them to a local charity orga nization.Just make sure these things are clean and usable.●You can help others in need by becoming a volunteer.During the holiday, you can help t o teach children from poor homes, or visit the old people, for example.(1)Which of the following is true of Red Nose Day?________A It is a huge charity event in the US every other year.B It is a festival for the poor peo ple all over the world.C Many people do funny things for charity on that day.D M any people wear a plastic red nose to make themselves beautiful.(2)According to the passage,which of the following is true?________A There are some animals in charity organizations.B People help those in need in man y creative ways.C Sick children and homeless people live in charity shops.D UK Oxfam started the first modern charity shop fifty-five years ago.(3)Why did so many musicians perform at the Live 8concerts?________A Because they wanted to ask people to remember their names.B Because they wante d to become richer and more famous.C Because the world leaders needed a list of their names.D Because they wanted to do their bit to fight poverty in Africa.(4)What did Kofi Annan think of the Live 8concerts?________A He liked such events and spoke highly of it.B He didn't care very much about the eve nt.C He hated going to concerts and was strongly against it.D He thought the mu sicians must do something different.(5)According to the passage,which of the following is NOT true?________A Some stores and malls in China have donation boxes in them.B We can give away the old things that we don't need to charity.C Volunteering is a good way for us to help pe ople in need.D Most charity organizations in China were set up in 1904.X.单词拼写(共5小题,每小题1分;满分5分)根据字母及汉语提示,完成下列单词的拼写,使句意明确,语言通顺.47. Mr.Liu always p________(练习) speaking French French teacher.48. This Sunday I plan to visit Science M________(博物馆) with my friends.49. The food in the restaurant is so d________(美味的) that it is crowded with people every day.50. This is a s________(象征) of good luck.51. Don't talk l________(大声地).My baby is sleeping.XI.书面表达:(共一大题,满分20分)52. 假如你是第二中学的一名初三学生刘红,你要写一封信给青少年专家Sigmund Friend,告诉他你遇到的问题,并请求帮助.请根据下列表格中所列的信息,写完这封信.注意:1.词数90左右.信的开头和结尾已写好,不计入总词数.2.信中须包括所有内容要点,不要逐词翻译,可适当发挥,使语句通顺,意思连贯,符合逻辑.Dear Sigmund Friend,My name is Liu Hong.I'm a Grade 9student in No.2Middle School..Can you give me some useful advice?I hope to hear from you soon.Best wishes!Yours Liu Hong.2013年安徽省安庆市中考英语模拟试卷答案1. B2. 略3. 略5. B6. C7. A8. C9. A10. C11. A12. B13. C14. A15. B16. AC17. ACB18. C,C19. Advice,Kate,clothes,friends,letter20. C21. A22. C23. D24. D25. C26. C27. A28. B29. A30. D31. B32. A33. D34. B35. C36. D37. C38. B39. A40. DADBCBABC41. DADBBCCCBA42. F,B,C,A,E43. BDADC44. CCABD45. DDCAB46. CBDAD47. ratices48. useum49. elicious50. ymbol51. oudly52. Dear Sigmund Friend,My name is Liu Hong.I'm a Grade 9 student in No.2 Middle School.My star sign is Gemini .And blue and yellow are my favourite colours.(姓名,星座,喜欢的颜色)But I have a big problem and I want to know how to deal with it.My parents are very strict with me.【高分句型一】They hardly give me some free time to play.I really hate this.I love to chat online,so I spend lots of time on the Internet after school.I also like to stay up late outside.Somet imes I don't hand in my homework on time.Now my study is getting worse and worse.【高分句型二】My parents and teachers are very angry with me.They want me to stop chatting online.Sh ould I give up my only hobby?I'm very stressed.(问题)Can you give me some useful advice?I hope to hear from you soon.(需求)Best wishes!Yours,Liu Hong。
安徽省安庆市中考语文模拟试题(一模)
2013年安庆市中考模拟考试(一模)语文试题一、语文积累与综合运用(35分)1.默写古诗文中的名句名篇。
(10分)(1)补写出下列名句中的上句或下句。
(任选6题,每题1分)①,西北望,射天狼。
(苏轼《江城子》)②浊酒一杯家万里,。
(范仲淹《渔家傲》)③,甲光向日金鳞开。
(李贺《雁门太守行》)④,草色入帘青。
(刘禹锡《陋室铭》)⑤春蚕到死丝方尽,。
(李商隐《无题》)⑥了却君王天下事,。
(辛弃疾《破阵子》)⑦,柳暗花明又一村。
(陆游《游山西村》)⑧出淤泥而不染,。
(周敦颐《爱莲说》)(2)《行路难(其一)》前四句描写了李白面对朋友设下的丰盛宴席,流露出被迫离开长安、壮志难酬、悲愤失望的情绪。
请默写出这四句诗。
(4分)2.根据下面的文字,完成(1)-(4)题。
(9分)春之花,骄艳动人,梦想是含苞欲放的渴望;夏之树,枝叶婆suō,梦想是生机勃勃的向往:秋之果,缀满枝头,梦想是沉甸甸的收获;冬之雪,漫天飞舞,梦想是银装素裹的妖娆。
梦想是永恒的微笑,梦想是飞翔的翅膀。
有梦想,就有为梦想而奋斗的豪迈人生。
如今中国梦就像一面旗帜,激励着国人奋发图强。
让我们抖擞精神,带着梦想出发,等到抵达秋天的果园,轻轻擦去夏天的汗水和灰尘时,我们就可以听见在春天许下的心愿:中国梦,美梦成真!(1)根据拼音写出相应的汉字,给加点的字注音。
(3分)婆suō()缀()满抖擞()(2)文中有一个错别字的词是“”,这个词的正确写法是“”。
(2分)(3)文中“妖娆”的意思是。
(2分)(4)这段文字主要运用了比喻、和等修辞手法,抒发了对梦想的赞美和实现中国梦的坚定信念。
(2分)3.运用你课外阅读积累的知识,完成(1)-(2)题。
(4分)(1)宋江是《水浒传》中的主要人物,也是作品中最丰满、最复杂的艺术形象。
他义释,怒杀阎婆惜,被发配江州,却因在题反诗被判死罪,后来,他率众招安,讨伐其他起义军,虽终被皇上赐酒毒死。
(2)《朝花夕拾》是鲁迅以回忆童年和青少年时期生活为主的集。
安庆市初中2013级中考第一次模拟考试数学试卷
安庆市初中 2013 级中考第一次模拟考试 数分钟。
注意事项: 1.答题前,考生务必将自己的姓名、考号用 0.5 毫米的黑色墨水签字笔填写在答题卡上,并认真 核对条形码上的姓名、考号。
2.第Ⅰ卷使用 2B 铅笔填涂在答题卡对应题目标号的位置上,第Ⅱ卷用 0.5 毫米的黑色墨水签字 笔书写在答题卡的对应框内。
超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。
3.考试结束后,将试题卷和答题卡一并交回。
学试 卷本试卷分试题卷和答题卷两部分。
试题卷共 5 页,答题卡共 3 页。
满分 150 分。
考试时间 120第Ⅰ卷 选择题(共 36 分)一.单项选择题(每小题 3 分,共 36 分) 1.-6 的倒数的绝对值的相反数是(1)A. 6B. 1 6C.-6D.62. 如图,数在线的 A、B、C、D 四点所表示的数分别为 a、b、c、 d,且 O 为原点.根据图中各点位置,判断|a-c|之值与下列何者不 同?( )A.|a|+|b|+|c|ABFD 的周长为(B.|a-b|+|c-b|)C.|a-d|-|d-c| D.|a|+|d|-|c-d|3.如图,将周长为8的△ ABC 沿 BC 方向平移1个单位得到△ DEF,则四边形A.6B.8C.10)D.124.下列图形中,既是轴对称图形,又是中心对称图形的是(A.B.C.D.5.下列事件属于必然事件的是( A,你做这套试卷得了 150 分。
B.明天绵阳市会下雨。
)C.如果你至一枚硬币 10 次,其中有 9 次正面朝上,下一次掷这枚硬币正面朝上的概率为 D.打开电视,正在放动漫世界。
1 226.如图,一次函数 y1=x+1 的图象与反比例函数 y2= x 的图象交于 A、B 两点,过点作 AC⊥x 轴于点 C,过点 B 作 BD⊥x 轴于点 D, 连接 AO、BO,下列说法正确的是( A.点 A 和点 B 关于原点对称 B.当 x<1时,y1>y2 C.S△ AOC=S△ BOD D.当 x>0时,y1、y2都随 x 的增大而增大 7.在面积为 15 的平行四边形 ABCD 中,过点 A 作 AE 垂直于直线 BC 于点 E,作 AF 垂直于直 线 CD 于点 F,若 AB=5,BC=6,则 CE+CF 的值为( )11 2 3)A. 11 11 32B. 11 11 23C.11 11 23或 11 D. 11 11 23或1 3 28.如图, 已知直角梯形 ABCD 中, AD∥BC, ∠ABC=90° AB=BC=2AD, , 点 E、F 分别是 AB、BC 边的中点,连接 AF、CE 交于点 M,连接 BM 并延长交 CD 于点 N, 连接 DE 交 AF 于点 P, 则结论: ①∠ABN=∠CBN; ②DE∥BN; ③△CDE 是等腰三角形; ④EM: BE= 5 : 1 ⑤梯形 ABCD,正确的个数有(S△ EPM= S81) D.2个A.5个B.4个C.3个9.如图,一个小球由地面沿着坡度 i=1:2 的坡面向上前进了 10m,此时小 球距离地面的高度为( )10 如图,已知点 A(4,0),O 为坐标原点,P 是线段 OA 上任意一点(不含端点 O,A),过 P、O 两点的二次函数 y1 和过 P、A 两点的二次函数 y2 的图象开 口均向下,它们的顶点分别为 B、C,射线 OB 与 AC 相交于点 D.当 OD=AD=3 时,这两个二次函数的最大值之和等于( )11.抛物线过点 A(2,0)、B(6,0)、C(1, 3 ),平行于 x 轴的直线 CD 交抛物线于点 C、D,以 AB 为直径的圆交直线 CD 于点 E、F,则 CE+FD 的值是( A.2 ( ) C.5 D.6B.4 )12.如图是由6个形同的小正方体搭成的一个几何体,则它的俯视图是A.B.C.D.第Ⅱ卷 非选择题(共 114 分)二.填空题(每小题 4 分,共 24 分) 13.有一组数据:6、3、4、x、7,它们的平均数是 10,则这组数据的中位数是________14.15.如图,AB,CD 是⊙O 的弦,AB⊥CD,BE 是⊙O 的直径.若 AC=3,则 DE=______ 16.某城市进行道路改造,若甲、乙两工程队合作施工 20 天可完成;若甲、乙两工程队 合作施工 5 天后,乙工程队在单独施工 45 天可完成.求乙工程队单独完成此工程需要多 少天?设乙工程队单独完成此工程需要 x 天,可列方程为 _______17.如图,四边形 ABCD 中, 对角线 AC⊥BD, AC=8, 且 BD=4,各边中点分别为 A1、 1、 1、 1, B C D 顺次连接得到四边形 A1B1C1D1, 再取各边中点 A2、 2、 2、 2, B C D 顺次连接得到四边形 A2B2C2D2, …, 依此类推,这样得到四边形 AnBnCnDn,则四边形 AnBnCnDn 的面 积为________18.如图,半圆 A 和半圆 B 均与 y 轴相切于 O,其直径 CD、EF 和 x 轴垂直,以 O 为顶点的两条抛物线分别经过点 C、E 和 D、F,则图中 阴影部分面积是_______ 三.解答题(共 90 分) 19.(本题满分 16 分)计算 (1). (cos 60 )。
2013年安庆市中考模拟考试物理试题
2013年安庆市中考模拟考试(一模)物理试题命题:安庆市中考命题研究课题组注意事项:1.本卷共四大题23小题,满分90分。
物理与化学的考试时间共120分针2.本卷试题中g 值均取10N /kg 。
一、填空题(1~7每题2分,8~l0每题4分,共26分。
将答案直 接填写在横线上,不必写出解题过程。
)1.2011年3月11日13时46分,日本本州岛附近海域发生里氏9.0级强震并引发海啸, 地震、海啸、台风、核武器试验以及导弹发射都会产生 ______(选填“超声波”、“次 声波”或“电磁波’’)。
日本地震造成福岛第一核电站反应堆冷却系统破坏,日本当局不断 采取向反应堆空中、地面注水的方法,进行冷却,以免造成更大的核事故,这种注水方法 利用了水的_________性质。
2. “嫦娥一号”探月卫星在距月球表面200km 高度经过多次“刹车制动”,最终绕月球做 匀速圆周运动,卫星“刹车制动”时,沿运动方向喷射高温气体,高温气体对卫星施加制 动力,这说明力的作用是_________的。
在绕月球做匀速圆周运动时, 卫星的运动状态 ______________(选填“改变”或“不变”)。
3.如图1所示,是电热水器原理的简易示意图,当闭合开关S 时,热 水器处于_________(选填“加热”或“保温”)状态。
在热水器的蓄水桶 中装水至最高水位后,若桶中水的质量为lOkg ,把这些水在一个标准大气压下由30℃加到沸腾时需吸收热量 ___________ J.4我国名酒五粮液素有“三杯下肚浑身爽,一滴沾唇满口香”的赞誉, 曾经获得世博会两届金奖。
有一种精品五粮液,它的包装盒上标明容量500mL ,(ρ酒=0.9×103/cm 3)则它所装酒的质量为_____kg;若这瓶酒喝掉半瓶,则剩下的半瓶酒的密度为________ g/cm 3.5.安庆是一座沿江城市,有美丽的大湖,气候宜人。
大湖中映着 岸边树木的倒影是由于光的_________所形成;湖岸边绽放有各种 颜色的花朵,其中黄花_________(选填“吸收”、“反射”、“透过”) 红色光。
安徽省安庆市2013届中考政治第一次模拟试卷
2013年安庆“一模”思想品德试卷一、单项选择题(下列各题四个选项中,只有一个是符合题意的。
请选出正确答案并将其序号填入下面的表格内。
共24分,12小题,每小题2分)1、2011年10月15日至18日,中国共产党十七届六次全会在北京举行。
全会审议通过了《中共中央关于深化改革、推动大发展大繁荣若干重大问题的决定》。
()A.经济体制社会主义经济 B.文化体制社会主义文化C.政治体制社会主义政治 D.社会体制社会主义社会2、2011年7月19日,庆祝大会在拉萨布达拉宫广场隆重举行。
国家副主席、中央代表团团长习近平出席庆祝大会并发表重要讲话。
()A.新疆维吾尔自治区成立50周年B.西藏和平解放60周年C.西藏和平解放50周年D.广西自治区成立50周年3、2011年11月28日至12月9日,联合国气候变化框架公约第17次缔约方会议在召开,大会通过决议,决定实施《京都议定书》第二承诺期并启动绿色气候基金。
()A. 美国纽约B. 丹麦哥本哈根C. 南非德班D. 墨西哥坎昆4、2012年2月14日,2011年度国家科学技术奖励大会在北京人民大会堂隆重举行。
国家主席胡锦涛向获得2011年度国家最高科学技术奖的和颁奖。
()A. 谢家麟吴良镛B. 吴文俊袁隆平C. 闵恩泽袁隆平D. 孙家栋谷超豪5、“对自己的不满足,是任何真正有天才的人的根本特征之一。
”(契诃夫)这句名言启示我们应该培养的品质。
()A.自信B.自负C.自强D.自尊6、值日生不小心把小华的书包弄脏了,小华非常生气,转念一想自己做值日生也有不小心的时候,就不再气了。
小华调节情绪的方法是()A. 心理换位B.自我暗示C. 合理宣泄D. 注意转移7、漫画《陷阱》给我们的警示是()A.明辨是非,拒绝不良诱惑B.免费的东西都是骗人的C.上当受骗都是因为免费的东西太诱惑人了D.生活中处处是陷阱,防不胜防8、期末考试,小龙未向监考老师请示便向旁边同学借橡皮,监考老师以为他抄袭,严厉地批评了小龙,小龙很不服气。
2013年4月安庆市中考模拟考试数学参考答案
数学参考答案和评分细则一、选择题(本题有10小题,每小题3分,共30分)二、填空题(本题有6小题,每小题4分,共24分)11. (x +3)(x -3) 12. 50 13. 90 90 (每空2分) 14. 6 15. 22 16.(1)332(2分) (2) 0, 32(每个1分) 三、解答题(本题有8小题,第17~19题每题6分,第20、21题每题8分,第22、23题每题10分,第24题12分,共66分) 17. 解:原式=2+1-1………………………………………………………………………4分=2 ……………………………………………………………………………6分18. 解:(1)添加的条件是:DE =DF (或CE ∥BF 或∠ECD =∠DBF 或∠DEC =∠DFB 等)………………………………………………………………………………2分(2)证明:(以第一种为例,添加其它条件的证法酌情给分)∵BD =CD ,∠EDC =∠FDB ,DE =DF ……………………………………5分∴△BDF ≌△CDE (6)19. 解:(1) 16 12.5% (每空1分)补全条形统计图如右图……………4分 (2)职工人数约为:28000×166=10500人 ……………6分 20.解:(1)∵∠ABC 与∠D 都是弧AC 所对的圆周角 ∴∠ABC =∠D =60° …………2分(2)∵AB 是⊙O 的直径 ∴∠ACB =90° ……………………………………3分∴∠BAC =30°∴∠BAE =∠BAC +∠EAC =30°+60°=90° …………………4分即BA ⊥AE∴AE 是⊙O 的切线 …………………………………………………………5分(3) 如图,连结OC∵OB =OC ,∠ABC =60°∴△OBC 是等边三角形∴OB =BC =4 , ∠BOC =60°∴∠AOC =120°…………………7分 ∴劣弧AC的ππ381804120=⋅⋅ …………………………………………8分21.解:(1)在Rt △BOA 中 ∵OA =4 21tan =∠BOA ∴AB =OA ×tan ∠BOA =2 2分(2)∵点D 为OB 的中点,点B (4,2)∴点D (2,1)又∵点D 在 的图象上 ∴21k =∴k=2 ∴ 4分又∵点E 在 图象上 ∴4n =2 ∴ n =21 分(3)设点F (a ,2)∴2a =2 ∴CF =a =1连结FG ,设OG =t ,则OG =FG =t CG =2-t在Rt △CGF 中,GF 2=CF 2+CG 2∴t 2=(2-t )2+12解得t =45 ∴OG =t =45 …………………………822.解:(1)小明骑车速度:)/(205.010h km = 在甲地游玩的时间是0.5(h )……3分(2)妈妈驾车速度:20×3=60(km /h )设直线BC 解析式为y =20x +b 1,把点B (1,10)代入得b 1=-10 ∴y =20x -10 ……4设直线DE 解析式为y =60x +b 2,把点D (34,0代入得b 2=-80 ∴y =60x -80………………5∴⎩⎨⎧-=-=8060,1020x y x y 解得⎩⎨⎧==2575.1y x ∴交点F (1.75,25)………………………7分答:小明出发1.75小时(105分钟)被妈妈追上,此时离家25km . (3)方法一:设从家到乙地的路程为m (km )则点E (x 1,m ),点C (x 2,m )分别代入y =60x -80,y =20x -10得:60801+=m x , 20102+=m x∵61601012==-x x ∴6160802010=+-+m m ∴m =30 …………………………10分) x y 2=xky =x ky =方法二:设从妈妈追上小明的地点到乙地的路程为n (km ), 由题意得:60106020=-n n ∴n =5 ∴从家到乙地的路程为5+25=30(km ) …………………………………………10分(其他解法酌情给分)23.解: (1)由旋转的性质可得∠A 1C 1B =∠ACB =45°,BC =BC 1∴∠CC 1B =∠C 1CB=45° ……………………………………………………2分∴∠CC 1A 1=∠CC 1B +∠A 1C 1B =45°+45°=90° ……………………………3分(2)∵△ABC ≌△A 1BC 1 ∴BA =BA 1,BC =BC 1,∠ABC =∠A 1BC 1∴11BC BA BC BA =∠ABC +∠ABC 1=∠A 1BC 1+∠ABC 1 ∴∠ABA 1=∠CBC 1 ∴△ABA 1∽△CBC 1 (5)分∴2516542211=⎪⎭⎫ ⎝⎛=⎪⎭⎫ ⎝⎛=∆∆BC AB S S CBC ABA ∵41=∆ABA S ∴4251=∆CBC S …7分(3)过点B 作BD ⊥AC ,D 为垂足∵△ABC 为锐角三角形 ∴点D 在线段AC 上在Rt △BCD 中,BD =BC ×sin45°=225……8分 ① 当P 在AC 上运动至垂足点D ,△ABC 绕点B使点P 的对应点P 1在线段AB 上时,EP 1最小,最小值为225-2 …………9分② 当P 在AC 上运动至点C ,△ABC 绕点B 旋转,使点P 的对应点P 1在线段AB 的延长线上时,EP 1最大,最大值为2+5=7 ………………………………………10分24.解:(1)把点A (3,6)代入y =kx 得6=3k ∴k =2 ∴y =2x ………………………2分OA =536322=+ ………………………………………………………………3分(2)QNQM 是一个定值 ,理由如下:过点Q 作QG ⊥y 轴于点G ,QH ⊥x 轴于点H . ①当QH 与QM 重合时,显然QG 与QN 重合, 此时2tan =∠===AOM OH QH QG QH QN QM ;②当QH 与QM 不重合时,∵QN ⊥QM ,QG ⊥不妨设点H ,G 分别在x 、y 轴的正半轴上∴∠MQH =∠GQN 又∵∠QHM =∠QGN =90°∴△QHM ∽△QGN …5分∴2tan =∠===AOM OHQH QG QH QN QM 当点P 、Q 在抛物线和直线上不同位置时,同理可得 …………………7分(3)延长AB 交x 轴于点F ,过点F 作FC ⊥OA 于点C ,过点A 作AR ⊥x 轴于点R∵∠AOD =∠BAE ∴AF =OF ∴OC =AC =1OA =523∵∠ARO =∠FCO =90° ∠AOR =∠FOC ∴△AOR ∽△FOC ∴5353===OR AO OC OF ∴OF =2155523=⨯ ∴点F (215,0)设点B (x ,3222742+-x ),过点B 作BK ⊥∴AR AK FR BK = 即6)322274(635.732+--=--x x 解得x 1=6 ,x 2=3(舍去) ∴点B (6,2) ∴BK =6-3=3 AK =6-2=4 ∴AB =5 …8分(求AB 也可采用下面的方法)设直线AF 为y =kx +b (k ≠0) 把点A (3,6),点F (215,0)代入得 k =34-,b =10 ∴1034+-=x y⎪⎪⎩⎪⎪⎨⎧+-=+-=322274,10342x y x y ∴⎩⎨⎧==6,311y x (舍去)⎩⎨⎧==2,622y x ∴B (6,2)∴AB =5 …8分(其它方法求出AB 的长酌情给分) 在△ABE 与△OED 中∵∠BAE =∠BED ∴∠ABE +∠AEB =∠DEO +∠AEB ∴∠ABE =∠DEO ∵∠BAE =∠EOD ∴△ABE ∽△OED ………………………………………9分设OE =x ,则AE =53-x (530<<x ) 由△ABE ∽△OED 得OEODAB AE =∴xm x =-553 ∴x x x x m 55351)53(512+-=-= (530<<x )…10分2=QNQM∴顶点为(523,49)如图,当49=m 时,OE =x =523,此时E 点有1个;当490<<m 时,任取一个m 的值都对应着两个x 值,此时E 点有2个.∴当49=m 时,E 点只有1个 ……11分当490<<m 时,E 点有2个 ……12分523xm4953。
【中考必做卷】安庆市2013年中考英语模拟试题
安庆市2013年中考英语模拟试题Ⅰ.关键词语选择(共5小题;每小题1分,满分5分)你将听到五个句子。
请在每小题所给的A 、B 、C 三个选项中选出你所听到的单词或短语。
每个句子读两遍。
1.A. street B. straight. C. strict2.A. feel B. fell C. fall3.A. sound B. found C. thunder4.A. nose B. news C. noise5.A. would like B. would rather C. rather thanⅡ.听短对话,选图片或答案。
(共10小题;每小题1分,满分10分)你将听到十段对话和十个问题,每段对话读两遍,每个问题读两遍。
请在每小题所给的A 、B 、C 三个选项中选出最佳选项。
6. What should the woman do?A. B. C.7. Who will mend (修理) the vase (花瓶) ?A. B. C.8. Where can Gina get a part-time job?A. B C..A 是post office 图,B 是服务员在餐厅,C 是超市图9. How does the man go to work now?A. B. C.10. How many children are there in the party?A. B. C.11. What is the girls problem ?A. She has too much homework.B. She can ’t understand the teacher in class.C. She doesn ’t want to do any homework.12. Why don’t they go to Dan’s clothing store ?A. Because they don’t have enough money.B. Because the clothes there are out of style.C. Because the clothes in Dick’s are cheaper.13. What happened between the boy and his sister ?A. They did something wrong.B. They went to buy clothes together.C. They didn’t talk with each other..14. What kind of the friend would the man like?A. A person who likes the same thing as he does.B. A person who looks the same as him.C. A person who is not the same as him.15.What does the woman think of PC games ?A. They are boring.B. They are interesting but bad for studies.C. They are fun and good for studies.Ⅲ.长对话理解(共5小题;每小题1分,满分5分)你将听到段长对话,每段长对话后有几个小题。
【初中物理】2013年安徽省安庆市中考模拟考试物理试题 通用
第4题图第5题图第3题图2013年安庆市中考模拟考试物理试题及答案(一模)注意事项:1.本卷共四大题23小题,满分90分。
物理与化学的考试时间共120分钟。
2.本卷试题中g 值均取10N /kg 。
一、填空题(每空2分,共26分;将答案直接写在横线上,不必写出解题过程)1.岳西茯苓是安庆特产之一。
晒干后的茯苓片,不仅外形美观,而且散发出幽幽清香。
鲜茯苓在切片晾晒过程中可以通过 的方式使水的内能增大,加快水份的蒸发。
2壳带电而造成触电事故。
3.如图,书架上并列竖直放着10本相同的书,取走5本后,书对书架的压强是原来的 倍。
4.一束光线从玻璃射向空气,如图所示,则折射角为。
5.2012年9月,我国第一艘航空母舰“辽宁舰”正式交付海军。
航母满载时的排水量为67500吨,在演习过程中,“辽宁”号航母上一架重量达30.9t 的舰载机从跑道上起飞后,航母排_________波可以探测海底情况。
(海水的密度为1.03×103kg/m 3)6.如图所示是电阻甲和乙的U-I 图象,则甲电阻为 Ω;当甲、乙并联在电路中,电源电压为2V 时,电路总电流为 A 。
7.小红的妈妈从超市买回一袋胡萝卜,小红捡了一个最大的用细线系好挂在弹簧测力计上(如图所示)。
胡萝卜受到的拉力为 N ,如果在系线处将胡萝卜切成两段,则G A _______G B (选填“大于”、“小于”或“等于”)第7题图 第8题图第6题图第12题图 第12题图8.质量为54g 的小金属块,放入装有40ml 水的量筒中,水面上升位置如图所示,则该金9.国家级森林公园天柱山以风景奇秀而著称,小华利用假期来天柱山游玩,在乘缆车匀速上山的过程中,小华的机械能将_________(“增大”、“减小”或“不变”) 。
10.小明用20N 的水平推力推着木箱在水平地面上做匀速直线运动,若小明将推力增大到30N 时,则地面对木箱的摩擦力大小为 N 。
二、选择题(每小题3分,共21分;每小题给出的四个选项中,只有一个选项是符合题意的,请将该选项的标号填入题后的括号内)11.下列估测的数据,最符合实际情况的是( )A .某同学的体重约为500NB .教室里课桌高度约为1.6mC .成年人步行速度约为4m/sD .教室内一盏灯的功率约为1000W12.如图所示,先将一个碗轻轻放在水缸中,发现它漂在水面上,此时它受到的浮力大小为F 1.然后把它按入水面下.发现它沉入水底,此时它受到的浮力大小为F 2.则F 1与 F 2的大小关系是( )A .F 1>F 2B .F 1=F 2C .F 1<F 2D .无法比较 13.如图,若瓶起子起瓶盖的机械效率为90% ,这表示( )A .若作用在起子的动力是10N ,则阻力是9NB .若作用在瓶盖的阻力是10N ,则动力是9NC .若作用在起子的动力做功1J ,则有0.9J 的功用于起瓶盖D .若作用在起子的动力做功1J ,则有0.1J 的功用于起瓶盖14.如图所示,用水平方向的力F 拉绳子的一端,使物体A 以2m/s 的速度向左匀速运动,此时弹簧测力计的示数为8N .不计滑轮、绳、弹簧测力计的重力及摩擦,则物体A 与水平面的摩擦力及2秒内绳子末端移动的距离分别为( )A .8N ,8mB .16N ,8mC .8N ,4mD .16N ,4m第13题图第14题图第15题图第17题图15.某同学在做“用滑动变阻器改变小灯泡亮度”的实验时,连接了如图所示的电路,闭合开关后,移动滑动变阻器的滑片,使小灯泡的亮度逐渐变亮,在此过程中,下列说法中错误..的是( )A .电路总电阻减小B .滑片逐渐向右移动C .电流表的示数变大D .电压表的示数变大16.厨房中的一些现象和做法常蕴含着物理知识,下列对应关系正确的是( )A .洗碗时,油花漂在水面上——油的密度比水大B .打开锅盖看到“白气”——汽化现象C .打开醋瓶能闻到酸味——分子做无规则运动D .厨刀刀口磨得很锋利——增大压力17.在下面几幅图中,能表示电磁感应现象的是( )三、实验题(第18、19小题各6分,第20小题8分,共20分)18.如图所示,将凸透镜固定在光具座上某位置(图中未标出),点燃的蜡烛放在光具座上的a 点,调节光屏的位置,在光屏上得到烛焰清晰倒立缩小的像,将蜡烛从a 点滑到b 点后,再移动光屏,屏上得到清晰的像变小。
2013年安徽省安庆市中考数学一模试卷
2013年安徽省安庆市中考数学一模试卷参考答案与试题解析一、选择题(本大题共10题,每小题4分,满分40分)1.(4分)(2013•桂林模拟)﹣2013的绝对值是()A.﹣2013 B.C.D.2013﹣考点:绝对值.分析:根据负数的绝对值等于它的相反数即可求解.解答:解:|﹣2013|=2013.故选D.点评:考查了绝对值,计算绝对值要根据绝对值的定义求解.第一步列出绝对值的表达式;第二步根据绝对值定义去掉这个绝对值的符号.2.(4分)(2010•大连)下列运算正确的是()A.a2•a3=a6B. (﹣a)4=a4C.a2+a3=a5D.(a2)3=a5考点: 幂的乘方与积的乘方;合并同类项;同底数幂的乘法.分析:根据幂的运算性质和合并同类项法则,对各选项分析判断后利用排除法求解.解答:解:A、应为a2•a3=a5,故本选项错误;B、(﹣a)4=a4,正确;C、a2和a3不是同类项不能合并,故本选项错误;D、应为(a2)3=a2×3=a6,故本选项错误.故选B.点评:本题主要考查:合并同类项,同底数幂的乘法,幂的乘方的性质,熟练掌握法则和运算性质是解题的关键,要注意不是同类项的不能合并.3.(4分)(2013•安庆一模)央视“舌尖上的浪费”报道,中国人每年在餐桌上浪费的粮食价值高达2000亿元,被倒掉的食物相当于2亿多人一年的口粮,其中2000亿元可用科学记数法为()A.2×103元B.2×108元C.2×1010元D.2×1011元考点:科学记数法—表示较大的数.分析:科学记数法的表示形式为a×10n的形式,其中1≤|a|<10,n为整数.确定n的值时,要看把原数变成a时,小数点移动了多少位,n的绝对值与小数点移动的位数相同.当原数绝对值>1时,n是正数;当原数的绝对值<1时,n是负数.解答:解:2000亿=2000 0000 0000=2×1011,故选:D.点评:此题考查科学记数法的表示方法.科学记数法的表示形式为a×10n的形式,其中1≤|a|<10,n为整数,表示时关键要正确确定a的值以及n的值.4.(4分)(2011•宿迁)如图,已知∠1=∠2,则不一定能使△ABD≌△ACD的条件是()A.A B=AC B.B D=CD C.∠B=∠C D.∠BDA=∠CDA考点:全等三角形的判定.分析:利用全等三角形判定定理ASA,SAS,AAS对各个选项逐一分析即可得出答案.解答:解:A、∵∠1=∠2,AD为公共边,若AB=AC,则△ABD≌△ACD(SAS);故本选项正确,不合题意.B、∵∠1=∠2,AD为公共边,若BD=CD,不符合全等三角形判定定理,不能判定△ABD≌△ACD;故本选项错误,符合题意.C、∵∠1=∠2,AD为公共边,若∠B=∠C,则△ABD≌△ACD(AAS);故本选项正确,不合题意.D、∵∠1=∠2,AD为公共边,若∠BDA=∠CDA,则△ABD≌△ACD(ASA);故本选项正确,不合题意.故选B.点评:此题主要考查学生对全等三角形判定定理的理解和掌握,此题难度不大,属于基础题.5.(4分)(2013•安庆一模)如图,已知AB∥DE,∠ABC=80°,∠CDE=140°,则∠C=()A.20°B.30°C.40°D.50°考点:三角形内角和定理;平行线的性质.专题:计算题.分析:利用平行线的性质和三角形的内角和即可求出.解答:解:延长ED交BC于F,∵AB∥DE,∴∠3=∠ABC=80°,∠1=180°﹣∠3=180°﹣80°=100°,∠2=180°﹣∠CDE=180°﹣140°=40°,在△CDF中,∠1=100°,∠2=40°,故∠C=180°﹣∠1﹣∠2=180°﹣100°﹣40°=40°.故选C.点评:本题较简单,考查的是平行线的性质及三角形内角和定理.6.(4分)(2013•安庆一模)如图,AB为圆O的直径,AB=AC,AC交圆O于点D,∠BAC=45°,则∠DBC的度数是()A.67。
安庆2013年中考模拟考试-安徽安庆十四中学
安庆市2013届初中毕业班十八校联考一模化 学 试 题命题:安庆十四中 鲍 顺 审题:安庆十四中 化学组温馨提示:1、本试卷满分60分。
化学与物理的考试时间共120分钟。
H-1 O-16 C-12 Ca-40 Cl-35.5 Fe-56 一、本大题包括10小题,每小题2A .磨杵成针B . 死灰复燃C .木已成舟D .积土成山 2、二氧化硫是一种有毒、易溶于水、密度比空气大的气体,且和水发生反应生成酸,在我国酸雨的类型主要是硫酸型酸雨。
下列收集SO 2的装置中合理的是( )A B C D3、下表是市场上销售的一种加碘食盐包装袋上的部分文字说明。
你认为下列中错误的是( )。
A. 碘酸钾是化合物B. 碘酸钾不稳定、受热易分解C. 碘酸钾是一种氧化物D. 在KIO 3中,碘元素化合价为+5价4、下列对某一主题知识归纳,正确的一组是 ( )A .生活常识:硬水与软水——观察颜色区别;自来水澄清透明是纯净物——直接饮用B .物质鉴别:氧气与二氧化碳——用带火星的木条;CO 、H 2、CH 4——利用气味区别C .安全常识:长时间堆放的柴草——要不时翻动;进入地窖前——先做灯火试验D.“一定”与“不一定”:由一种元素组成的物质一定是单质;分子不一定是不停地运动的5、古语道:“人要实,火要虚”。
此话的意思是说:做人必须脚踏实地,事业才能有成;燃烧固体燃料需要架空,燃烧才能更旺。
从燃烧的条件看,“火要虚”的实质是()A.增大可燃物的热值B.提高空气中氧气的含量C.提高可燃物的着火点D.增大可燃物与空气的接触面积6、某阴离子X2-的核外有18个电子,核内有18个中子,则X的相对原子质量为()A.54B.38C.36D.347、在WO3+3H2W+3H2O的反应中,还原剂是()A.WO3 B.H2C.W D.3H28、如下图所示:3个甲分子与1个乙分子反应生成两个丙分子。
根据图示所得信息正确的是()A.物质甲的化学式为H6 B.该反应为化合反应C.化学反应中分子是最小的微粒D.该图示不符合质量守恒定律9、下图所示实验基本操作错误的是()10、将一定质量的a、b、c、d四种物质放入一密闭容器中,在一定条件下反应一段时间下列说法中错误的是()A.a和b是反应物,d可能是催化剂。
安徽省安庆市中考物理一模试卷(解析版) 新人教版
安徽省安庆市2013年中考物理一模试卷一、填空题(每空2分,共26分)1.(4分)(2013•安庆一模)2012年5月21日,我国东南沿海部分地区出现了日食,这是由于光的直线传播形成的.冬天,遇到大风的天气,路旁架设的电线会啸啸地响,这种声音是由于电线振动而产生.2.(2分)(2013•安庆一模)某同学采用如图所示的方法测定硬币上(或下)表面面积.测得硬币的直径D= 1.85 cm.D=3.(2分)(2013•安庆一模)图为安庆市人们路步行商业街综合改造工地现场一角,图中挖掘机能在松软的沙地上施工,是因为安装了宽大的履带,这是运用了物理学中通过增大受力面积从而减小压强的知识.4.(2分)(2013•安庆一模)一束光线从玻璃射向空气,如图所示,则折射角为30°.5.(2分)(2013•安庆一模)家庭电路中,大功率或有金属外壳的家用电器,通常都要使用三脚插头,这是为了防止因漏电使外壳带电而造成触电事故.6.(2分)(2013•安庆一模)岳西茯苓是安庆特产之一,鲜茯苓切片后放在阳光下晾晒,在此过程中是通过热传递的方式使茯苓中的水分温度升高,加快了水份的蒸发.7.(2分)(2013•安庆一模)我们唱卡拉OK时,要用到话筒.如图是动圈时话筒构造示意图,其工作原理是电磁感应.8.(2分)(2013•安庆一模)如图甲将伞撑开时,伞的每条骨架都可近似看成一个杠杆,乙图是其中一条骨架的示意图,伞面对骨架的压力为阻力F2,支点为O.它是一个费(选填“省”或“费”)力的杠杆,请在乙图中画出阻力臂L2.9.(4分)(2013•安庆一模)某人准备用如图所示的滑轮装置来提升重物,已知每个滑轮重20N,动滑轮上每段绳子能承受的最大拉力是100N,若不考虑摩擦和绳子重力,他站在地上最多能安全提起180 N的物体,此时,该滑轮组的机械效能为90% .=×100%=×100%=×100%=×100%求出机械效率.×100%=×100%=×100%=×100%=10.(4分)(2013•安庆一模)如图所示,小明用20N的力推着木箱沿着斜面向上做匀速直线运动,木箱的机械能将增大(填“增大”、“减小”或“不变”).若小明将推力增大到30N时,则斜面对木箱的摩擦力将不变(填“增大”、“减小”或“不变”).二、选择题(每小题3分,共21分。
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……………………6分 ……………………8分 2013年安庆市中考模拟考试(一模)
数学试题参考答案及评分标准
一、选择题:(每小题4分,满分40分)
二、填空题(每小题5分,满分20分) 11.
2
21+ 12. 13. 5
14. ①③④ 三、(每小题8分,满分16分)
15. 16.①如图, ……………………4分 ②如图,路线长为:
904
2180
ππ⨯=. ……………………8分
17.(1)设该市政府平均每年投资的增长率为x ,根据题意,得: …………1分
2+2(1+x)+2(1+x)2=9.5
解得:x 1=-3.5(舍),x 2=0.5 ……………………5分 (2)(9.5-2)÷2×8=30(万m 2) ……………………7分 答:(1)该市政府平均每年投资的增长率为50%
(2)2013、2014这两年共建设了30万平方米的廉租房. ……………………8分
18.(1)
2222422(21)2(1)mx mx m m x x m x -+=-+=-323;2;
1=1
=1x x x x x -+-=-=解:去分母得:移项,合并同类项,得2系数化为,得:经检验,原方程的根是。
…………………3分
(2)根据C 、D ,当L 不变时, ;根据A 、B 、E ,当N 不变时,
综上,得: …………………6分
(3)当L=10,N=12时,S=10+6—1=15 …………………8分
19.(1)∵ 正方形ABGH 、BCFG 、CDEF 是全等正方形,
∴ BC=CD=DE=AB=6 ∴AD=3AB=3×6=18 ∵BG ∥DE
∴∠ABG=∠D ,∠ABP=∠AED ∴△ABP ∽△ADE ∴
∴
cm ……………………4分
(2)图中共有三对全等三角形:△ABP ≌△EFQ 、△EGP ≌△ACQ 、△ADE ≌△EHA.
证明: ∵正方形ABGH 、BCFG 、CDEF 是全等的正方形 …………………7分
∴AB=BC=EF=FG ∴AB+BC=EF+FG 即AC=EG
∵AD ∥HE ∴∠1=∠2 ∵BG ∥CF ∴∠3=∠4
∴△EGP ≌△ACQ (选另外两对也可)……………………10分 20.(1)将A 的坐标为(2,1)代入a y x
= 得:1=
2
a
,则 =2 ∴反比例函数的解析式是: ……………………3分
(2)根据图象,不等式的解集为x >2或10x -<< ……………………10分 21. 用a 表示方片3,用b 表示梅花5,用c 表示红桃6,用d 表示黑桃10, (1)画树状图为 开始
N S=L+1
2—N
S
L=12
——N S =L 12——2B m 2y=x 2 2
m= 12A 21B 12y=kx+b -k+b=-2
2k+b=1
k=1b=-1y=x-1m =∴∴⎧∴⎨⎩⎧⎨⎩∴ 将(,-)代入中,得
--1B 的坐标为(-,-)点(,)、(-,-)都在直线上,解得一次函数的解析式为a 2y x =……………………7分
小华:
小军:
a b c d
b c d a c d a b d a b c ……………………6分 列表为:
……………………6分
(1)因为方片3,黑桃10是中心对称图形,而梅花5,红桃6不是中心对称图形, ……………………9分
所以摸出两张牌面图形都是中心对称图形的纸牌的情况只有
(a ,d )、(d ,a )两种,概率P =
6
1
122=. ……………………12分 22.(1)由题意,CE=2x cm ,DF=x cm
∴CF=(3—x )cm
43
2(),3()
21E S F S ==动点的运动时间为动点的运动时间为
2
02342(3)2612x y x x x x ≤≤=⨯--=-+当时, ……………………2分
23344(3)4x y x x ≤≤=⨯--=当时, ……………………4分
202342(3)2612x y x x x x ≤≤=⨯--=-+当时,
……………………6分
234x y x y x ≤≤=当时,,随的增大而增大
……………………8分
综上, ……………………10分
(3)不存在,由(2)可知,
2315
2()22
x =-+
3
15
=22
x y ∴=最小当时,2=8x y ∴=最小当时,315
=22
x y ∴
=最小当时,315=22x y =最小当时,(2)① ②
15
6,2x ABCD CFHE >∴
不存在某一时间,使得矩形去掉矩形后剩余部分的面积为原矩形面积的一半
23.(1)直接套用中点坐标公式,答案为(1,1) ……………………5分
(2)根据平行四边形的性质:对角线互相平分,可知AC 、BD 的中点重合,所以由中点坐标
公式有:
代入数据,得:
所以点D 的坐标为(6,0)。
……………………8分
(3)当AB 为该平行四边形一边时,则CD‖AB ,对角线为AD 、BC 或AC 、BD ;
;;222.22222
A C A C
B
C B C
B D B D A D A D x x y y x x y y x x y y x x y y ++++++++====或
2=2C D A B D C A B y y y y y y y y ∴-=---==或
02C D y y =∴=∵,或-2
代入到1
12
y x =
+中,可得D(2,2)或 D 当AB 为该平行四边形的一条对角线时,则CD 为另一条对角线;
;2222
C D C D
A B A B x x y y x x y y ++++== 24C D A B y y y y +=+=+ 06C D y y =∴=∵,
代入到1
12
y x =
+中,可得D(10,6) 综上,符合条件的D 点坐标为D(2,2)或 D(-6,-2)、D(10,6) ………14分 (每写出一个给两分)
021546;2222D D
x y +++-+==
;2.
222A C A C B D B D
x x y y x x y y ++++==6,0D D x y ∴==(6,2)-- ……………………12分。